JPS5950359B2 - electric iron - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bottom plate of an electric iron, and its object is to enable the temperature of the bottom plate to be quickly raised to a uniform temperature.

Generally, a sheathed heater is embedded in the bottom plate of an iron.

The sheathed heaters are arranged in a substantially U-shape along the outer periphery of the bottom plate so as to heat the bottom plate substantially uniformly.

However, since this sheathed heater is linear, there is a problem in that the temperature is low in a portion away from where the sheathed heater is located, and the temperature is not uniform.

For this reason, in the past, the thickness of the bottom plate was increased to improve thermal conductivity so that the temperature in the area away from the sheathed heater would rise to almost the same temperature, but this increases the heat capacity of the bottom plate and increases the heat conductivity. The drawback was that it took a long time to reach the temperature.

The present invention eliminates these conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an iron main body, a handle 2 is attached to the upper part, and an operation switch 3 is provided at the lower part.

4 is a power cord, 5 is a bottom plate provided at the bottom of the iron body 1, and is a heat vibro.

6' is buried.

The heat vibro is flat and inclined so as to be located over almost the entire area of the bottom plate 5, and is inclined in the vertical direction so that the front part is located upward.

The inside of this heat vibro is deaerated and a capillary material containing a working fluid such as water is provided at the bottom side.

8 and 8' are heat vibros where this capillary material 7 is located;
The heater is heat-sensitively provided on the bottom side of 6', and is embedded in the bottom plate 5 together with the heat vibro 6'.

Note that this bottom plate 5 is formed by casting.

In the above configuration, when the heaters 8, 8' are energized to generate heat, the heat is generated as heat vibro.

The working fluid in the capillary material 7 evaporates and rises to the upper space 6a, 5a' in the heat vibro 6'.

This working fluid condenses into a liquid in the upper spaces 6a, 6a' of the heat vibro 6', flows toward the capillary material 7, and evaporates again.

In other words, this cycle of evaporation and condensation is repeated.

At this time, the working fluid generates heat of condensation and heats the bottom plate 5 so that it can be ironed, but the bottom plate 5 has a heat capacity corresponding to the heat vibro, 6' buried (only the hollow part of the heat pipe). Small and heat vibro.

Since the temperature of 6' itself rises quickly, the temperature rises quickly.

Furthermore, since the above-mentioned pipes 6.degree. 6' are buried so as to be located over almost the entire area of the bottom plate 5, the temperature of the bottom plate 5 rises to a uniform temperature.

In addition, in this example, the heat vibro 6' is installed at an angle, so that the evaporated steam can be smoothly returned to the bottom, and no special member is required for this purpose, making it possible to simplify the large-width configuration. It has the advantage of being able to

Further, in this embodiment, since the capillary material 7 is provided at the bottom of the heat vibro 6', there is an advantage that the working fluid can be continuously evaporated.

However, this is not necessary.

In this embodiment, two heat pipes are provided, but according to the present invention, the present invention is not limited to this, and the number of heat pipes is not limited to one, or three or more may be used. It may also be in the shape of a pipe.

Also, although the heat pipe was installed at an angle, it can also be horizontal if the inner surface is lined with capillary material.This allows the bottom plate to be made thinner, and the position of the heater in contact with the outer wall of the heat pipe can be freely set. can.

Also, this heater may be provided inside the heat pipe,
This will make the iron rise even faster.

It is also possible to provide a conventional steam iron by providing holes passing through the top and bottom of the bottom plate.

As described above, according to the present invention, due to the presence of the heat pipe, it is possible to obtain a rapid and uniform temperature rise of the bottom plate that could not be obtained with a heater alone, and this has great industrial value.

[Brief explanation of drawings]

FIG. 1 is a cutaway side view of essential parts of an electric iron according to an embodiment of the present invention, and FIG. 2 is a bottom view of its bottom plate. 5...Bottom plate, 6,6'...Heat pipe, 8゜8'...Heater.

Claims (1)

[Scope of Claims] 1. An electric iron in which a heat pipe is buried in almost the entire area of the bottom plate, and a heater is thermally disposed in a part of the heat pipe. 2. The electric iron according to claim 1, wherein the heat pipe is buried vertically inclined.